Magnetization Process of Kagome-Lattice Heisenberg Antiferromagnet
Abstract
The magnetization process of the isotropic Heisenberg antiferromagnet on the kagome lattice is studied. Data obtained from the numerical-diagonalization method are reexamined from the viewpoint of the derivative of the magnetization with respect to the magnetic field. We find that the behavior of the derivative at approximately one-third of the height of the magnetization saturation is markedly different from that for the cases of typical magnetization plateaux. The magnetization process of the kagome-lattice antiferromagnet reveals a new phenomenon, which we call the “magnetization ramp”.
- Publication:
-
Journal of the Physical Society of Japan
- Pub Date:
- May 2010
- DOI:
- 10.1143/JPSJ.79.053707
- arXiv:
- arXiv:1004.2528
- Bibcode:
- 2010JPSJ...79e3707N
- Keywords:
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- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 4 pages, 5figures, accepted in J. Phys. Soc. Jpn.